[182741] in North American Network Operators' Group
Re: AT&T U-Verse Data Setup Convention
daemon@ATHENA.MIT.EDU (Ricky Beam)
Thu Jul 30 18:31:35 2015
X-Original-To: nanog@nanog.org
To: "Keith Stokes" <keiths@neilltech.com>
Date: Thu, 30 Jul 2015 18:31:29 -0400
From: "Ricky Beam" <jfbeam@gmail.com>
In-Reply-To: <5BD14ADA-0315-4A2D-84C5-733DFE9A4B5A@neilltech.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Thu, 30 Jul 2015 12:02:06 -0400, Keith Stokes <keiths@neilltech.com>
wrote:
> 1. Is it really accurate that the customer’s address is tied to the
> modem/router?
To the 802.1x identity of the device, yes. That's the unit serial number,
which (partial) contains the MAC.
> 2. For my curiosity, is this done through a DHCP reservation or is there
> a hard coded entry somewhere?
No. It's just "plain" DHCP. Until the pool is depleted, addresses don't
get recycled. So, even if your address were released, it would take days
before it would be assigned to someone else. (which DOES happen, btw)
Addresses are *NOT* hard coded. You can order (and pay for) a static
subnet that is routed to whatever dynamic link address you get. That's the
only "static" they offer.
> 3. Do all U-Verse modem/routers behave the same way? This particular
> unit was a Motorola but the friends I’ve seen with U-Verse use a Cisco
> unit.
Yes. This is a fundamental part of the network. If you *do* manage to
side-step their PoS hardware, your own router will experience the same
addressing scheme.
